Double blank ejector for can body forming machines



DOUBLE BLANK EJECTOR FOR CAN BODY FORMINGMACHINES July 7, 1942- L. o. RoNKsLEY 288,920

DOUBLE BLANK EJECTOH FOR CAN BODY FORMING MACHINES Filed Aug. 25, 1939 5 sheets-sheet 2 f l; /rgaf l mmf - July 7, 1942 l.. o. RoNKsLEY 2,288,920

DOUBLE. BLANK rEJ'EGTOR FOR CAN BODY FORMING MACHINES Filed Aug. 25, 1959 5 Sheets-Shed 5 July 7, 1942 L. o.- RQNKSLEY 2,288,920

nouams BLANK EJEcTloR FoR'cAN BODY Femme mamas Filed Aug. 25, 19:59 5 Sheets-sheet 4 f7 rra @Ms Y6 July 7, 1942. L .'o. RoNKsLEY 2,288,920

DOUBLE BLANK EJECTOR FOR CAN BODY FORMING MACHINES Filed Aug. 25, 1939 5 Sheets-Sheet 5 l' 2,288,920 l from the. intermediate m11 4e to permit nor-" mal passage of single body (blanks` will be shifted'so'that its nose portion 5l engages with that roll, andas the double or superposed'blank passes through the rolls 45, I6' and is diverted upwardly bythe breaker steel "Ill'it will engage l the plate 51, 55'and be ejected into theA ejector blankr'eceiver: Thisiejection of double orsuperposed canbody blanks is accomplished ,without stopping the body maker or interrupting` the .continuous feedv of the body blanks from the lin performing they proximity with `the intermedate roll,

detalls of` structure and arrangement of parts ,i

' may be` variously changed andmodifled without departing' from the spirit vention;

, Having thus described the invention, what I claim as new and desire to secure 'by Letters Patent, is

vand scope of my in deflector plate into said the feedline to the .rolls to-pass. between the intermediate `roll and the lower roll and around the intermediate roll and beneath the upper roll Vback tothe feed line; means for detecting the presence of double or superposed blanks,.means `controlled by saiddetecting means for diverting `such double orsuperposed blanks to pre- `vent their returnbetween the intermediate and upper rolls, said last-named means including a deector. plate movable into and out of close spring meansnormally holding the `deilector plate out ofy clost proximity with said intermediate roll, and electrically actuated means for forcing said close proximity with the intermediate roll.` i i 5.-1n la can bodylmaker, blank guiding means,

blank' moving means, opposed power driven grainL 1. In a can bodymaker wherein isvpijovided a n i'eedllne, means for `feeding blanks step-by-step along theA line, a set of grain. breaking rolls, and, means for normally presenting blanks from thev feed line to the rollsv and for returning them through said rolls to said feed line; means for detecting the presence of double or `superposedblanks, and means controlled by said detecting means and movable into and out ofengagement with said roll set for diverting and preventing return through said roll set of double or superposed blanks or for permitting andy grinding. normal return throughsaid roll set of singleblanks. a y

2. In a can body maker whereinis provided a feed line, means for feeding blanks step-by' step alongthe line, a set of grain breaking rolls, and means for normally presenting blanks from the feed line to the rollsV and for returning them through said rolls to said feed line; means for ldetecting theA `presence of doubleor superposed' blanks, a defiector plate movable into andout oil,

engagement withsaid Aroll set for diverting and. preventing return through said roll set of double or superposed. blanks or `for permitting and guiding normal return through said roll set of single blanks, counterbalancing means for moving the plate in one direction, and electrically actuated -means controlled by said detecting means for moving the plate in the opposite direction.

3. In a can body maker wherein is` providedv a feed line, means for feeding blanks,` step-bystep along the line, a constantly engaged set of grain breaking rolls composed of three rolls superposed with their axes in parallel relation, and means for normally presenting blanks from the feed line to the rolls to pass between the intermediate roll and the lower roll and around the intermediate roll and beneath the upper roll back to the feed line;` mea-ns for detecting the presence of double or superposed blanks, -and means controlled by said detecting means for diverting such double or superposed blanks' to prevent their return between the intermediate and upper rolls, said last-named means including a defiector plate movable into andy out of close proximity with the intermediate roll.

4. In a can body maker wherein'is provided a. feed line, means for feeding blanks step-bystep along the line, a constantly engaged set of grain breaking rolls composed of` three rolls superposed with their axes in parallel relation,

breaking. rolls Abetween `which said blanks normally are moved, an ejector for ejectirig double or superposed blanks from theirl usual path of travel between said rolls, electricallyA actuated means formoving the ejector to an `eje'cting positionwith relation tosaid rolls, counterbalancing means normally holding they ejector out of ejecting position, van energizing circuit including a. normally open swtch lfor. controlling "actuation of` the ejector, a detector member disposed in spaced opposition to a 'portion `ofthe guiding means and normally permitting passage f blanks,l but `movable-upon engagement by double orsuperposed blanksto close said lsvi/itch and effect an ejection of` said'd'oubley or superposed blanks, said detector `member comprising ajpivotallyzmounted bell crank lever having one arm 1 presented in opposition tov said guiding means `portion and its otherarm opposed to said switch,

l yvarythe spaced relation ofv the respective lever `arms with the guiding member lportion and the switch, respectively.

6. In a can body maker wherein is vprovidedl a constantly engaged set of grain'br'eaking rolls,

and devices for feeding blanks through the machine including means for presenting `said blanks tosaid rolls; means'v for detecting kthe presence oi' double orv superposed blanks, a blank v guiding and ejecting element normally spaced irom one of said rolls for guiding single blanks thereabout' and movable into proximity with one of saidrolls for divertingy a detected'blank double from the course it would ordinarily follow` and ejecting the same, and means controlled by said detecting means for placing said element in itsblank double diverting position.

7. In a can body maker, blank guiding means, blank moving means, opposed power driven grain breaking rolls between which saidv blanks .normally are moved, an ejector for ejecting double or superposedv blanks' from their usual path of travel between said rolls, electrically actuated' means for moving the ejector to an ejecting position with relationto said rolls, counterbalancing means normally holding. the ejector out of ejecting position, an energizing circuit including a normally open switch for controlling actuation of the ejector, and a detector member disposed in spacedfopposition to a portion of the guiding means, and normally permitting passage of blanks, but movable upon engagement by double` or superposed blanks to close said switch and effect an' ejection of said double or superposed blanks, said ejector having two roll opposing .l surfaces one effective normally to aid in guiding l from said usual path and out of the machine.

, 8. In a can body maker wherein is provided a feed-line, means for feeding blanks step-bystep along the line, a constantly engaged set of grain breaking rolls composed of three rolls superposed with their axes in parallel relation, and means for normallypresenting blanks from the feed line to the rolls to pass between the intermediate roll andthe lower roll and around the intermediate roll and beneath the upper roll back to the feed-line; means for detecting the presence 4of double vor superposed blanks, and means controlled by said detecting means for diverting such double or superposed blanks to prevent their return between the intermediate and upper rolls, said last-namedmeans including a kdeiiector plate movable into and out of close proximity with the intermediate roll and including a surface normally effective to guide single blanks about the intermediate roll and between it and the uppermost roll and another surface ei'fective whensaid plate is moved into close proximity with said intermediate roll to divert double blanks out of the machine.

. 9. In a can body maker wherein is provided a feed line, means for feeding blanks step-bystep along the line, a constantly engaged set of grain breaking rolls composed of three rolls superposed with their axes in parallel relation, and means for normally presenting blanks from the feed line to the rolls to pass between the intermediate roll and the lower roll and around the intermediate roll and beneath the upper roll back to the feed line; means for detecting the presence of double or superposed blanks, means controlled by said detecting means for diverting t such double or superposed blanks to prevent their return between the intermediate'and upper rolls, said last-,named `means including a deector plate movable into and out of close proximity with the intermediate roll and including `a surface normally effective to guide single blanks about the intermediate roll and between it and the uppermost roll and another surface eil'ective when said plate'is moved into close proximity with said intermediate roll to divert double blanks out ofthe machine, spring means normally holding the plate in its single blank guiding position, and electrically actuated means for forcing said plate into its double blank diverting position. l l t 10. In a can body maker wherein is provided a feed line, means for feeding blanks step-bystep along the feed line, a set ofl constantly engaged and rotating grain breaking rolls composed of three rolls superposed with their axes in parallel relation, means for presenting blanks from the feed line to the rolls to pass between the intermediate roll and one of the engaging rolls, blank guiding and deilecting means normally positioned relative to said rolls so as to be effective to direct single blanks passing between said intermediate roll and said one engaging roll about said intermediate roll and between it and the other engagingl roll thereby to break grain in said single blanks and return them to the feed line. means for detecting the presence of double or superposed blanks, and means controlled by said detecting means for displacing the blank guiding and deiiecting means from its normal single blank directing position and repositioning it in a double blank deflecting position relative to said rolls each time a double blank is detected thereby to cause said detected double blank to be ejected from the machine by the intermediate and said one engaging roll.

11. In a can body maker, a feed line, means for feeding blanks step-by-step along the line, a. set of grain breaking rolls presenting a. first set of surfaces in rolling contact eective to feed blanks from the line and a second set of surfaces in rolling contact effective to return the blanks to the line, means for presenting blanks from the feed line to the first set of surfaces, means normally effective for directing between said second set of surfaces blanks being moved by said first set of surfaces for return to the feed line, and means including a shiftable diverter surface automatically eective each time double blanks are presented for passage through said first set of surfaces for diverting said double blanks from said normal diverting means soY that the feed function of said rst set of surfaces will be effective to eject said double blanks from the machine.

LOUISk O. RONKBLEY.

Ju1y'1,1942. J. R. ROSENLEAF mL 2,288,921

' cUToFF MACHINE Filed Nov. 22, 1940 6 Sheets-Sheet 1 IN VENTOR.

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